Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079269 |
Eclipse-Induced Changes to Topside Ion Composition and Field-Aligned Ion Flows in the August 2017 Solar Eclipse: e-POP Observations | |
Yau, Andrew W.1; Foss, Victoria1; Howarth, Andrew D.1; Perry, Gareth W.1; Watson, Christopher2; Huba, Joseph3 | |
2018-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:20页码:10829-10837 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | We present in situ ion composition and velocity measurements during the August 2017 solar eclipse from the Enhanced Polar Outflow Probe (e-POP), which crossed the path of totality at similar to 640-km altitude within 10 min of totality passing. These measurements reveal two distinct H+ ion populations, an similar to 40% decrease in topside plasma density, a similar drop in upward but not downward H+ ion flux, and a downward O+ ion velocity of similar to 100 m/s. These features are directly linked to changes in the H+/O+ composition and in interhemispheric or field-aligned light ion flow and to a reduction in the negative spacecraft potential. These observed features were absent on the preceding, noneclipse days and corroborate the reduction in F region plasma density and topside total electron content observed by the Global Positioning System receivers on board. They are attributed to the temporary reduction of photoionization in the eclipsed F region. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451510500005 |
WOS关键词 | IONOSPHERE ; MASS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29070 |
专题 | 气候变化 |
作者单位 | 1.Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada; 2.UCAR, COSMIC Program Off, Boulder, CO USA; 3.US Naval Res Lab, Washington, DC USA |
推荐引用方式 GB/T 7714 | Yau, Andrew W.,Foss, Victoria,Howarth, Andrew D.,et al. Eclipse-Induced Changes to Topside Ion Composition and Field-Aligned Ion Flows in the August 2017 Solar Eclipse: e-POP Observations[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(20):10829-10837. |
APA | Yau, Andrew W.,Foss, Victoria,Howarth, Andrew D.,Perry, Gareth W.,Watson, Christopher,&Huba, Joseph.(2018).Eclipse-Induced Changes to Topside Ion Composition and Field-Aligned Ion Flows in the August 2017 Solar Eclipse: e-POP Observations.GEOPHYSICAL RESEARCH LETTERS,45(20),10829-10837. |
MLA | Yau, Andrew W.,et al."Eclipse-Induced Changes to Topside Ion Composition and Field-Aligned Ion Flows in the August 2017 Solar Eclipse: e-POP Observations".GEOPHYSICAL RESEARCH LETTERS 45.20(2018):10829-10837. |
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